Compare proton with other words:
ion vs. proton
croton vs. proton
hydride vs. proton
methylate vs. proton
proton vs. tritium
proton vs. triton
hydrogen vs. proton
element vs. proton
charge vs. proton
nucleus vs. proton
positively vs. proton
iron vs. proton
neuron vs. proton
electron vs. proton
acid vs. proton